A109497 - OEIS

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A109497 as a simple table

n	a(n)
0	1
1	1
2	2
3	2
4	2
5	2
6	3
7	3
8	4
9	4
10	4
11	4
12	5
13	5
14	6
15	6
16	6
17	6
18	6
19	6
20	7
21	7
22	7
23	7
24	8
25	8
26	8
27	8
28	8
29	8
30	9
31	9
32	10
33	10
34	10
35	10
36	11
37	11
38	11
39	11
40	11
41	11
42	12
43	12
44	12
45	12
46	12
47	12
48	13
49	13
50	14
51	14
52	14
53	14
54	14
55	14
56	14
57	14
58	14
59	14
60	14
61	14
62	15
63	15
64	15
65	15
66	16
67	16
68	17
69	17
70	17
71	17
72	18
73	18
74	19
75	19
76	19
77	19
78	20
79	20

[1,1,2,2,2,2,3,3,4,4,4,4,5,5,6,6,6,6,6,6,7,7,7,7, 8,8,8,8,8,8,9,9,10,10,10,10,11,11,11,11,11,11,12, 12,12,12,12,12,13,13,14,14,14,14,14,14,14,14,14, 14,14,14,15,15,15,15,16,16,17,17,17,17,18,18,19, 19,19,19,20,20]

n	a(n)
0	1
1	1
2	2
3	2
4	2
5	2
6	3
7	3
8	4
9	4
10	4
11	4
12	5
13	5
14	6
15	6
16	6
17	6
18	6
19	6
20	7
21	7
22	7
23	7
24	8
25	8
26	8
27	8
28	8
29	8
30	9
31	9
32	10
33	10
34	10
35	10
36	11
37	11
38	11
39	11
40	11
41	11
42	12
43	12
44	12
45	12
46	12
47	12
48	13
49	13
50	14
51	14
52	14
53	14
54	14
55	14
56	14
57	14
58	14
59	14
60	14
61	14
62	15
63	15
64	15
65	15
66	16
67	16
68	17
69	17
70	17
71	17
72	18
73	18
74	19
75	19
76	19
77	19
78	20
79	20

n	a(n)
0	1
1	1
2	2
3	2
4	2
5	2
6	3
7	3
8	4
9	4
10	4
11	4
12	5
13	5
14	6
15	6
16	6
17	6
18	6
19	6
20	7
21	7
22	7
23	7
24	8
25	8
26	8
27	8
28	8
29	8
30	9
31	9
32	10
33	10
34	10
35	10
36	11
37	11
38	11
39	11
40	11
41	11
42	12
43	12
44	12
45	12
46	12
47	12
48	13
49	13
50	14
51	14
52	14
53	14
54	14
55	14
56	14
57	14
58	14
59	14
60	14
61	14
62	15
63	15
64	15
65	15
66	16
67	16
68	17
69	17
70	17
71	17
72	18
73	18
74	19
75	19
76	19
77	19
78	20
79	20

n	a(n)
0	1
1	1
2	2
3	2
4	2
5	2
6	3
7	3
8	4
9	4
10	4
11	4
12	5
13	5
14	6
15	6
16	6
17	6
18	6
19	6
20	7
21	7
22	7
23	7
24	8
25	8
26	8
27	8
28	8
29	8
30	9
31	9
32	10
33	10
34	10
35	10
36	11
37	11
38	11
39	11
40	11
41	11
42	12
43	12
44	12
45	12
46	12
47	12
48	13
49	13
50	14
51	14
52	14
53	14
54	14
55	14
56	14
57	14
58	14
59	14
60	14
61	14
62	15
63	15
64	15
65	15
66	16
67	16
68	17
69	17
70	17
71	17
72	18
73	18
74	19
75	19
76	19
77	19
78	20
79	20